diff --git a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/DownloadSequenceDisplayColumnFactory.java b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/DownloadSequenceDisplayColumnFactory.java
index 127f58fec..b5cd00bd6 100644
--- a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/DownloadSequenceDisplayColumnFactory.java
+++ b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/DownloadSequenceDisplayColumnFactory.java
@@ -10,9 +10,8 @@
 import org.labkey.api.util.PageFlowUtil;
 import org.labkey.api.view.HttpView;
 import org.labkey.api.view.template.ClientDependency;
+import org.labkey.api.writer.HtmlWriter;
 
-import java.io.IOException;
-import java.io.Writer;
 import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.Map;
@@ -38,12 +37,12 @@ public DisplayColumn createRenderer(ColumnInfo colInfo)
             private boolean _handlerRegistered = false;
 
             @Override
-            public void renderGridCellContents(RenderContext ctx, Writer out) throws IOException
+            public void renderGridCellContents(RenderContext ctx, HtmlWriter out)
             {
-                Object val = ctx.get(FieldKey.fromString(getBoundColumn().getFieldKey().getParent(), "rowId"));
-                out.write(PageFlowUtil.link("Download Sequence").attributes(Map.of(
-                    "data-rowid", val.toString()
-                )).addClass("sdc-row").toString());
+                Integer val = ctx.get(FieldKey.fromString(getBoundColumn().getFieldKey().getParent(), "rowId"), Integer.class);
+                out.write(PageFlowUtil.link("Download Sequence").
+                        attributes(Map.of("data-rowid", val.toString())).
+                        addClass("sdc-row"));
 
                 if (!_handlerRegistered)
                 {
diff --git a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/GenbankDisplayColumnFactory.java b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/GenbankDisplayColumnFactory.java
index 8f0d49a59..f35de5fa6 100644
--- a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/GenbankDisplayColumnFactory.java
+++ b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/GenbankDisplayColumnFactory.java
@@ -6,6 +6,8 @@
 import org.labkey.api.data.DisplayColumnFactory;
 import org.labkey.api.data.RenderContext;
 import org.labkey.api.util.PageFlowUtil;
+import org.labkey.api.util.URLHelper;
+import org.labkey.api.writer.HtmlWriter;
 
 import java.io.IOException;
 import java.io.Writer;
@@ -23,26 +25,25 @@ public GenbankDisplayColumnFactory()
     @Override
     public DisplayColumn createRenderer(ColumnInfo colInfo)
     {
-        DataColumn ret = new DataColumn(colInfo)
+        return new DataColumn(colInfo)
         {
             @Override
-            public void renderGridCellContents(RenderContext ctx, Writer out) throws IOException
+            public void renderGridCellContents(RenderContext ctx, HtmlWriter out)
             {
-                Object val = ctx.get(getBoundColumn().getFieldKey());
+                String val = ctx.get(getBoundColumn().getFieldKey(), String.class);
                 if (val != null)
                 {
-                    String[] vals = String.valueOf(val).replaceAll("\\s+", "").split(";|,");
+                    String[] vals = val.replaceAll("\\s+", "").split("[;,]");
                     String delim = "";
                     for (String v : vals)
                     {
-                        out.write(delim + "<a href=" + getFormattedURL(v) + ">" + PageFlowUtil.encode(v) + "</a>");
+                        out.write(delim);
+                        out.write(PageFlowUtil.link(v).href(getFormattedURL(v)).clearClasses());
                         delim = "; ";
                     }
                 }
             }
         };
-
-        return ret;
     }
 
     protected String getFormattedURL(String v)
diff --git a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisCustomizer.java b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisCustomizer.java
index f23070d67..d19a0b445 100644
--- a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisCustomizer.java
+++ b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisCustomizer.java
@@ -26,14 +26,15 @@
 import org.labkey.api.query.QueryForeignKey;
 import org.labkey.api.query.QueryService;
 import org.labkey.api.security.User;
+import org.labkey.api.util.HtmlString;
+import org.labkey.api.util.HtmlStringBuilder;
 import org.labkey.api.util.PageFlowUtil;
 import org.labkey.api.view.ActionURL;
 import org.labkey.api.view.HttpView;
 import org.labkey.api.view.template.ClientDependency;
+import org.labkey.api.writer.HtmlWriter;
 import org.labkey.sequenceanalysis.SequenceAnalysisSchema;
 
-import java.io.IOException;
-import java.io.Writer;
 import java.util.Collection;
 import java.util.Set;
 
@@ -42,6 +43,8 @@
  */
 public class SequenceAnalysisCustomizer implements TableCustomizer
 {
+    private static final HtmlString COMMA_NEWLINE = HtmlStringBuilder.of(",").append(HtmlString.BR).getHtmlString();
+
     @Override
     public void customize(TableInfo tableInfo)
     {
@@ -258,7 +261,7 @@ private FieldKey getBoundKey(String colName)
                 }
 
                 @Override
-                public void renderGridCellContents(RenderContext ctx, Writer out) throws IOException
+                public void renderGridCellContents(RenderContext ctx, HtmlWriter out)
                 {
                     Integer rowId = ctx.get(getBoundKey("rowId"), Integer.class);
                     if (rowId != null)
@@ -267,18 +270,29 @@ public void renderGridCellContents(RenderContext ctx, Writer out) throws IOExcep
                         if (value != null)
                         {
                             String[] tokens = value.split(",");
-                            String delim = "";
+                            HtmlString delim = HtmlString.EMPTY_STRING;
                             for (String token : tokens)
                             {
                                 ActionURL url = QueryService.get().urlFor(ctx.getViewContext().getUser(), ctx.getContainer(), QueryAction.executeQuery, SequenceAnalysisSchema.SCHEMA_NAME, SequenceAnalysisSchema.TABLE_OUTPUTFILES);
                                 url.addParameter("query.fileSets~contains", token);
 
-                                out.write(delim + "<a href=\"" + url.getURIString() + "\"" + ">" + token + "</a>");
-                                delim = ",<br>";
+                                out.write(delim);
+                                out.write(PageFlowUtil.link(token, url).clearClasses());
+                                delim = COMMA_NEWLINE;
                             }
                         }
 
-                        out.write("<a class=\"fa fa-pencil lk-dr-action-icon sfs-row\" data-tt=\"tooltip\" data-rowid=\"" + rowId +"\" data-original-title=\"add/edit\"></a>");
+                        out.write(PageFlowUtil.link("").
+                                clearClasses().
+                                addClass("fa fa-pencil").
+                                addClass("lk-dr-action-icon").
+                                addClass("sfs-row").
+                                attributes(PageFlowUtil.map(
+                                        "data-tt", "tooltip",
+                                        "data-rowid", rowId.toString(),
+                                        "data-original-title", "add/edit"
+                                ))
+                        );
 
                         if (!_handlerRegistered)
                         {
diff --git a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisUserSchema.java b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisUserSchema.java
index 28aabfd54..27aa00773 100644
--- a/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisUserSchema.java
+++ b/SequenceAnalysis/src/org/labkey/sequenceanalysis/query/SequenceAnalysisUserSchema.java
@@ -31,13 +31,13 @@
 import org.labkey.api.query.SimpleUserSchema;
 import org.labkey.api.security.User;
 import org.labkey.api.sequenceanalysis.pipeline.SequenceOutputHandler;
+import org.labkey.api.util.HtmlString;
 import org.labkey.api.util.PageFlowUtil;
 import org.labkey.api.view.ActionURL;
+import org.labkey.api.writer.HtmlWriter;
 import org.labkey.sequenceanalysis.SequenceAnalysisSchema;
 import org.labkey.sequenceanalysis.SequenceAnalysisServiceImpl;
 
-import java.io.IOException;
-import java.io.Writer;
 import java.util.Arrays;
 import java.util.LinkedHashSet;
 
@@ -259,7 +259,7 @@ public DisplayColumn createRenderer(ColumnInfo colInfo)
                     return new DataColumn(colInfo)
                     {
                         @Override
-                        public void renderGridCellContents(RenderContext ctx, Writer out) throws IOException
+                        public void renderGridCellContents(RenderContext ctx, HtmlWriter out)
                         {
                             Object o = getValue(ctx);
                             if (o != null)
@@ -267,9 +267,7 @@ public void renderGridCellContents(RenderContext ctx, Writer out) throws IOExcep
                                 ActionURL url = QueryService.get().urlFor(getUser(), ctx.getContainer(), QueryAction.executeQuery, SequenceAnalysisSchema.SCHEMA_NAME, SequenceAnalysisSchema.TABLE_READ_DATA);
                                 url.addFilter("query", FieldKey.fromString("readset"), CompareType.EQUAL, o);
 
-                                out.write("<a class=\"labkey-text-link\" href=\"" + url + "\">");
-                                out.write("View File(s)");
-                                out.write("</a>");
+                                out.write(PageFlowUtil.link("View File(s)", url));
                             }
                             else
                             {
@@ -448,19 +446,20 @@ public DisplayColumn createRenderer(ColumnInfo colInfo)
             return new DataColumn(colInfo)
             {
                 @Override
-                public void renderGridCellContents(RenderContext ctx, Writer out) throws IOException
+                public void renderGridCellContents(RenderContext ctx, HtmlWriter out)
                 {
                     String result = StringUtils.trimToNull(super.getFormattedHtml(ctx).toString());
-                    String delim = "";
+                    HtmlString delim = HtmlString.EMPTY_STRING;
                     if (result != null)
                     {
                         String[] tokens = result.split(",");
                         for (String token : tokens)
                         {
-                            String url = DetailsURL.fromString(_baseUrl + PageFlowUtil.encode(token), ctx.getContainer()).getActionURL().toString();
+                            ActionURL url = DetailsURL.fromString(_baseUrl + PageFlowUtil.encode(token), ctx.getContainer()).getActionURL();
 
-                            out.write(delim + "<a href=\"" + url + "\">" + token + "</a>");
-                            delim = "<br>";
+                            out.write(delim);
+                            out.write(PageFlowUtil.link(token, url).clearClasses());
+                            delim = HtmlString.BR;
                         }
                     }
                 }